is when you are taking a crap in a porto shitter and the splashes up and touches your ass!
My white underwear were blue from a smurf kiss.
A droplet of the blue water in porashitters that is launched by reciprocal force onto your anus or any exposed . I.e. a massive turd that splashes water onto you.
I just got a smurf kiss on my balls... does anyone have any baby wipes?